I am averaging about 60 mpg based off of 1500 miles of travel.
Dean
it's always best to average over several tanks, when the economy is higher and smaller size tank, the difference if an ounce or 2 on the fill-up fill level can make that tank full artificially high or low. I've really seen that on my K-Pipe, anywhere from 40 to 140 mpg for an individual tank, yes 40mpg with my k-pipe, extreme circumstance tho, my trip to mt washington, 4tanks total, but one, was 15 miles of keeping it pinned to the auto road, then 7 steep winding miles to the summit, then back down, popping and backfiring under engine brake, 15 miles of being pinned again to the same gas station where I put 1.1 gal in my 1.2 gal tank on the other hand, just puttering around 30-35 mph, I get 100 routinely